Oh man! So sorry for your daughter. This is one of the few things that make me completely furious! Physical assault is in my book the worst offense. Should be punished utterly severely. The scum animals in the world that lack the mental boundaries to attack other people should be eradicated, pissed on, dismembered, decapitated, killed, thrown up on and buggered with a sharp object. Not necessarily in that order, mind you.
(first time I have used the angry emoticon I believe).